Compound microscope made by Hartnack & Prazmowski. Has a horseshoe foot. The mirror and the stage are placed above a compass joint that holds the pillar with the body-tube. Coarse focus is by rackwork. Fine focus is by a screw and knob. The instrument has a condenser fitted with a diaphragm. The eyepiece is Huygenian. Accessories include objectives and items for handling specimens. Belonged to the Gabinetto degli Invertebrati of the Istituto di Studi Superiori of Florence.